Qashqai J11. Engine control system (MR20DD)

ECM-66

< SYSTEM DESCRIPTION >

[MR20DD]

DIAGNOSIS SYSTEM (ECM)

Self Diagnostic Item

Regarding items of DTC and 1st trip DTC, refer to

ECM-93, "DTC Index"

How to Read DTC and 1st Trip DTC

DTCs and 1st trip DTCs related to the malfunction are displayed in “Self-diag results” mode with CONSULT.
“TIME” indicates the number of driving the vehicle after the last detection of DTC.
• When ECM has detected a current DTC, “0” is displayed for “TIME”.
• When ECM memorizes a 1st trip DTC, “1t” is displayed for “TIME”.
• If “TIME” is neither “0” nor “1t”, the DTC occurred in the past.

How to Erase DTC

NOTE:
If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 sec-
onds and then turn it ON (engine stopped) again.
1.

Select “ENGINE” with CONSULT.

Select “SELF-DIAG RESULTS” mode.

Touch “ERASE”. (DTC in ECM will be erased.)

Freeze Frame Data and 1st Trip Freeze Frame Data

*1: The items are the same as those of 1st trip freeze frame data.

DATA MONITOR MODE

NOTE:

Freeze frame data item*

Description

DIAG TROUBLE CODE
[PXXXX]

The engine control component part/control system has a trouble code displayed as PXXXX. (Refer to

ECM-93, "DTC Index"

CAL/LD VALUE %]

The calculated load value at the moment a malfunction is detected is displayed.

COOLANT TEMP [

The engine coolant temperature at the moment a malfunction is detected is displayed.

L-FUEL TRM-B1 %]

• “Long-term fuel trim” at the moment a malfunction is detected is displayed.
• The long-term fuel trim indicates much more gradual feedback compensation to the base fuel sched-

ule than short-term fuel trim.

L-FUEL TRM-B2 %]

S-FUEL TRM-B1 %]

• “Short-term fuel trim” at the moment a malfunction is detected is displayed.
• The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel

schedule.

S-FUEL TRM-B2 %]

ENGINE SPEED [rpm]

The engine speed at the moment a malfunction is detected is displayed.

VEHICL SPEED [km/h]
or [mph]

The vehicle speed at the moment a malfunction is detected is displayed.

ABSOL TH·P/S [%]

The throttle valve opening angle at the moment a malfunction is detected is displayed.

INJ PULSE [msec]

The basic injection quantity at the moment a malfunction is detected is displayed.

INT/A TEMP SE [

C] or

[

The intake air temperature at the moment a malfunction is detected is displayed.

FUEL SYS-B1

• “Fuel injection system status” at the moment a malfunction is detected is displayed.
• One of the following mode is displayed.
- MODE 2: Open loop due to detected system malfunction
- MODE 3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
- MODE 4: Closed loop - using oxygen sensor(s) as feedback for fuel control
- MODE 5: Open loop - has not yet satisfied condition to go to closed loop

FUEL SYS-B2

INT MANI PRES [kPa]

• Constant value is displayed.
• These items are displayed but are not applicable to this model.

COMBUST CONDITION

FUEL RAIL PRESSURE
[MPa]

The fuel rail pressure at the moment a malfunction is detected is displayed.

TARGET FUEL RAIL
PRESSURE [MPa]

The target fuel rail pressure at the moment a malfunction is detected is displayed.

BATTERY VOLTAGE [V]

The battery voltage at the moment a malfunction is detected is displayed.

FUEL LEVEL [%]

The fuel level at the moment a malfunction is detected is displayed.

DIAGNOSIS SYSTEM (ECM)

ECM-67

< SYSTEM DESCRIPTION >

[MR20DD]

ECM

• The following table includes information (items) inapplicable to this vehicle. For information (items) applica-

ble to this vehicle, refer to CONSULT display items.

• For reference values of the following items, refer to

ECM-73, "Reference Value"

Monitored Item

Monitored item

Unit

Description

Remarks

ENG SPEED

rpm

Indicates the engine speed computed from the signal of
the crankshaft position sensor and camshaft position
sensor.

Accuracy becomes poor if engine
speed drops below the idle rpm.

MAS A/F SE-B1

The signal voltage of the mass air flow sensor is dis-
played.

• When the engine is stopped, a

certain value is indicated.

• When engine is running, normal

range is indicated in “SPEC”.

B/FUEL SCHDL

“Base fuel schedule”indicates the fuel injection pulse
width programmed into ECM, prior to any learned on
board correction.

When engine is running, normal
range is indicated in “SPEC”.

A/F ALPHA-B1

The mean value of the air-fuel ratio feedback correction
factor per cycle is indicated.

• When the engine is stopped, a

certain value is indicated.

• This data also includes the data

for the air-fuel ratio learning con-
trol.

• When engine is running, normal

range is indicated in “SPEC”.

COOLAN TEMP/S

The engine coolant temperature (determined by the sig-
nal voltage of the engine coolant temperature sensor) is
displayed.

When the engine coolant tempera-
ture sensor is open or short-circuit-
ed, ECM enters fail-safe mode.The
engine coolant temperature deter-
mined by the ECM is displayed.

A/F SEN1 (B1)

The A/F signal voltage computed from the input signal
of the air fuel ratio (A/F) sensor 1 is displayed.

HO2S1 (B1)

The signal voltage of the heated oxygen sensor 2 is dis-
played.

VHCL SPEED SE

km/h

The vehicle speed computed from the vehicle speed
signal sent from combination meter is displayed.

BATTERY VOLT

The power supply voltage of ECM is displayed.

ACCEL SEN 1

The signal voltage of the accelerator pedal position sen-
sor 1 is displayed.

ACCEL SEN 2

The converted value of the accelerator pedal position
sensor signal voltage is displayed.

ACCEL SEN 2 signal is converted
by ECM internally. Thus, they dif-
fers from ECM terminal voltage sig-
nal.

TP SEN 1-B1

The signal voltage of the throttle position sensor 1 B1 is
displayed.

TP SEN 2-B1

The value converted from the signal voltage of the throt-
tle position sensor 2 B1 is displayed.

TP SEN 2-B1 signal is converted
by ECM internally. Thus, they dif-
fers from ECM terminal voltage sig-
nal.

START SIGNAL

ON/

OFF

Indicates start signal status [ON/OFF] computed by the
ECM according to the signals of engine speed and bat-
tery voltage.

After starting the engine, [OFF] is
displayed regardless of the starter
signal.

CLSD THL POS

ON/

OFF

Indicates idle position [ON/OFF] computed by ECM ac-
cording to the accelerator pedal position sensor signal.

AIR COND SIG

ON/

OFF

Indicates [ON/OFF] condition of the air conditioner
switch as determined by the air conditioner signal.

PW/ST SIGNAL

ON/

OFF

Indicates [ON/OFF] condition of the power steering sys-
tem (determined by the signal voltage of the power
steering pressure sensor signal).

ECM-68

< SYSTEM DESCRIPTION >

[MR20DD]

DIAGNOSIS SYSTEM (ECM)

LOAD SIGNAL

ON/

OFF

Indicates [ON/OFF] condition of the electrical load sig-
nal.
• ON...Rear window defogger switch is ON or lighting

switch is in 2nd position.

• OFF...Both rear window defogger switch and lighting

switch are OFF.

IGNITION SW

ON/

OFF

Indicates [ON/OFF] condition from ignition switch sig-
nal.

HEATER FAN SW

ON/

OFF

Indicates [ON/OFF] condition from the heater blower
ON signal.

BRAKE SW

ON/

OFF

Indicates [ON/OFF] condition from the stop lamp switch
signal.

IGN TIMING

BTDC

Indicates the ignition timing computed by ECM accord-
ing to the input signals.

When the engine is stopped, a cer-
tain value is indicated.

COMBUSTION

NOTE:
These items are displayed but are not applicable to this
model.

CAL/LD VALUE

“Calculated load value” indicates the value of the cur-
rent air flow divided by peak air flow.

MASS AIRFLOW

g/s

Indicates the mass air flow computed by ECM accord-
ing to the mass air flow sensor signal.

PURG VOL C/V

• Indicates the control value of the EVAP canister

purge volume control solenoid valve computed by the
ECM according to the input signals.

• The opening becomes larger as the value increases.

INT/V TIM (B1)

• Indicates [

CA] of intake camshaft advance angle.

EXH/V TIM B1

• Indicates [

CA] of exhaust camshaft advance angle.

INT/V SOL (B1)

• The control value of the intake valve timing control

solenoid valve (determined by ECM according to the
input signals) is indicated.

• The advance angle becomes larger as the value in-

creases.

VTC DTY EX B1

• The control value of the exhaust valve timing control

solenoid valve (determined by ECM according to the
input signals) is indicated.

• The advance angle becomes larger as the value in-

creases.

SWRL CONT S/V

ON/

OFF

• The control condition of the intake manifold runner

control valve (determined by ECM according to the
input signals) is indicated.

- On: Closed
- Off: Open

AIR COND RLY

ON/

OFF

The air conditioner relay control condition (determined
by ECM according to the input signals) is indicated.

FUEL PUMP RELAY

ON/

OFF

• Indicates the fuel pump relay control condition deter-

mined by ECM according to the input signals.

THRTL RELAY

ON/

OFF

Indicates the throttle control motor relay control condi-
tion determined by the ECM according to the input sig-
nals.

HO2S1 HTR (B1)

ON/

OFF

Indicates [ON/OFF] condition of heated oxygen sensor
2 heater determined by ECM according to the input sig-
nals.

I/P PULLY SPD

rpm

Indicates the engine speed computed from the input
shaft revolution signal.

VEHICLE SPEED

km/h

The vehicle speed computed from the vehicle speed
signal sent from TCM is displayed.

Monitored item

Unit

Description

Remarks

DIAGNOSIS SYSTEM (ECM)

ECM-69

< SYSTEM DESCRIPTION >

[MR20DD]

ECM

IDL A/V LEARN

YET/

DONE

Displays the condition of Idle Air Volume Learning.
• YET...Idle air volume learning has not been per-

formed yet.

• DONE...Idle air volume learning has already been

performed successfully.

TRVL AFTER MIL

km or

mile

Distance traveled while MIL is activated.

ENG OIL TEMP

The engine oil temperature (determined by the signal
voltage of the engine oil temperature sensor) is dis-
played.

A/F S1 HTR (B1)

• Indicates the duty ratio of the Air fuel ratio (A/F) sen-

sor 1 heater computed by ECM according to the input
signals.

• The current flow to the heater becomes larger as the

value increases.

VHCL SPEED SE

km/h or

mph

The vehicle speed computed from the vehicle speed
signal sent from unified meter and combination meter is
displayed.

SET VHCL SPD

km/h or

mph

The preset vehicle speed is displayed.

MAIN SW

ON/

OFF

Indicates [ON/OFF] condition from MAIN switch signal.

CANCEL SW

ON/

OFF

Indicates [ON/OFF] condition from CANCEL switch sig-
nal.

RESUME/ACC SW

ON/

OFF

Indicates [ON/OFF] condition from RESUME/ACCEL-
ERATE switch signal.

SET SW

ON/

OFF

Indicates [ON/OFF] condition from SET/COAST switch
signal.

BRAKE SW1

ON/

OFF

Indicates [ON/OFF] condition from brake pedal position
switch signal.

BRAKE SW2

ON/

OFF

Indicates [ON/OFF] condition of stop lamp switch sig-
nal.

VHCL SPD CUT

NON/

CUT

Indicates the vehicle cruise condition.
• NON...Vehicle speed is maintained at the ASCD set

speed.

• CUT...When the vehicle speed decreased to exces-

sively low speed compared with the ASCD set speed,
ASCD operation is cut off.

LO SPEED CUT

NON/

CUT

Indicates the vehicle cruise condition.
• NON...Vehicle speed is maintained at the ASCD set

speed.

• CUT...When the vehicle speed decreased lower than

the ASCD minimum set speed, ASCD operation is cut
off.

AT OD MONITOR

ON/

OFF

Indicates [ON/OFF] condition of A/T O/D according to
the input signal from the TCM.

AT OD CANCEL

ON/

OFF

Indicates [ON/OFF] condition of A/T O/D cancel request
signal.

CRUISE LAMP

ON/

OFF

Indicates [ON/OFF] condition of CRUISE indicator de-
termined by the ECM according to the input signals.

SET LAMP

ON/

OFF

Indicates [ON/OFF] condition of SET indicator deter-
mined by the ECM according to the input signals.

A/F ADJ-B1

—

Indicates the correction of a factor stored in ECM. The
factor is calculated from the difference between the tar-
get air-fuel ratio stored in ECM and the air-fuel ratio cal-
culated from A/F sensor 1 signal.

Monitored item

Unit

Description

Remarks

ECM-70

< SYSTEM DESCRIPTION >

[MR20DD]

DIAGNOSIS SYSTEM (ECM)

NOTE:

Any monitored item that does not match the vehicle is not displayed.

*: Indicates intake manifold runner control valve.

WORK SUPPORT MODE

Work Item

P/N POSI SW

ON/

OFF

Indicates [ON/OFF] condition from the reverse/neutral
position signal.

INT/A TEMP SE

C or

The intake air temperature (determined by the signal
voltage of the intake air temperature sensor) is indicat-
ed.

AC PRESS SEN

The signal voltage from the refrigerant pressure sensor
is displayed.

FUEL PRESS SEN

MPa

Indicates the fuel rail pressure computed by ECM ac-
cording to the input signals.

ATOM PRES SEN

The signal voltage from the barometric pressure sensor
is displayed.

FUEL INJ B1

msec

ECM-calculated injection pulse width of the fuel injector
on the Bank 1 side.

H/P FUEL PUMP DEG

deg

Displays ECM-calculated fuel discharge position of the
high pressure fuel pump.

FUEL PRES SEN V

The signal voltage of FRP sensor is displayed.

EOP SENSOR

The signal voltage of EOP sensor is displayed.

ECM TEMP 1

Displays a temperature calculated from a signal of ECM
temperature sensor 1.

ECM TEMP 2

Displays a temperature calculated from a signal of ECM
temperature sensor 2.

FUEL INJ TIM

BTDC

Indicates the fuel injection timing computed by ECM ac-
cording to the input signals.

FAN DUTY

• Indicates a command value for cooling fan. The value

is calculated by ECM based on input signals.

THRTL STK CNT B1

—

NOTE:
These items are displayed but are not applicable to this
model.

A/F SEN1 (B1)

• The A/F signal computed from the input signal of the

air fuel ratio (A/F) sensor 1 is displayed.

A/F-S ATMSPHRC CRCT
B1

—

Displays a determined value of atmospheric correction
factor necessary for correcting an A/F sensor signal in-
put to ECM. The signal used for the correction is an A/
F sensor signal transmitted while driving under atmo-
spheric pressure.

A/F-S ATMSPHRC CRCT
UP B1

count

Displays the number of updates of the A/F sensor atmo-
spheric correction factor.

A/F SEN1 DIAG2(B1)

INCMP/

CMPLT

• Indicates DTC P014C or P014D self-diagnosis condi-

tion.

- INCMP: Self-diagnosis is incomplete.
- CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG3(B1)

ABSNT/

PRSNT

• Indicates DTC P014C, P014D, P015A or P015B self-

diagnosis condition.

- ABSNT: The vehicle condition is not within the diag-

nosis range.

- PRSNT: The vehicle condition is within the diagnosis

range.

Monitored item

Unit

Description

Remarks

DIAGNOSIS SYSTEM (ECM)

ECM-71

< SYSTEM DESCRIPTION >

[MR20DD]

ECM

*: This function is not necessary in the usual service procedure.

ACTIVE TEST MODE

Test Item

Work item

Condition

Usage

IDLE AIR VOL LEARN

The idle air volume that keeps the engine speed within the
specified range is memorized in ECM.

When learning the idle air volume

FUEL PRESSURE RE-
LEASE

• Fuel pump will stop by touching “START” during idling.
• Crank a few times after engine stops.

When releasing fuel pressure from fuel line

TARGET IDLE RPM
ADJ*

Idle condition

When setting target idle speed

SELF-LEARNING
CONT

The coefficient of self-learning control mixture ratio returns
to the original coefficient.

When clearing mixture ratio selflearning
value.

TARGET IGN TIM ADJ*

Idle condition

When adjusting target ignition timing

VIN REGISTRATION

In this mode, VIN is registered in ECM.

When registering VIN in ECM

CLSD THL POS LEARN

Ignition switch ON and engine stopped.

When learning the throttle valve closed po-
sition

SAVING DATA FOR RE-
PLC CPU

In this mode, save data that is in ECM.

When ECM is replaced.

WRITING DATA FOR
REPLC CPU

In this mode, write data stored by “SAVE DATA FOR CPU
REPLC” in work support mode to ECM.

When ECM is replaced.

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

ENG COOLANT
TEMP

Change the engine coolant tempera-
ture using CONSULT.

If malfunctioning symptom dis-
appears, see CHECK ITEM.

• Harness and connectors
• Engine coolant temperature

sensor

• Fuel injector

FUEL INJECTION

Change the amount of fuel injection
using CONSULT.

If malfunctioning symptom dis-
appears, see CHECK ITEM.

• Harness and connectors
• Fuel injector
• Air fuel ratio (A/F) sensor 1

PURG VOL CONT/V

• Engine: After warming up, run en-

gine at 1,500 rpm.

• Change the EVAP canister purge

volume control solenoid valve open-
ing percent using CONSULT.

Engine speed changes accord-
ing to the opening percent.

• Harness and connectors
• EVAP canister purge volume

control solenoid valve

FUEL PUMP RELAY

• Ignition switch: ON (Engine

stopped)

• Turn the fuel pump relay “ON” and

“OFF” using CONSULT and listen to
operating sound.

Fuel pump relay makes the op-
erating sound.

• Harness and connectors
• Fuel pump relay

INTAKE MANIFOLD
RUNNER CON-
TROL VALVE
(OPEN/CLOSE)

• Ignition switch: ON (Engine

stopped)

• Turn the intake manifold runner con-

trol valve “ON” and “OFF” using
CONSULT to open or close.

Touch the intake manifold run-
ner control valve motor and
check the operating vibration
and sound.

• Harness and connectors
• Intake manifold runner control

valve

• Intake manifold runner control

valve motor

FAN DUTY CON-

TROL

• Engine: Idle
• Change duty ratio (0 - 100%) using

CONSULT.

Cooling fan moves and stops.

• Harness and connectors
• Cooling fan motor
• Cooling fan relay
• IPDM E/R

IGNITION TIMING

• Timing light: Set
• Retard the ignition timing using

CONSULT.

If malfunctioning symptom dis-
appears, see CHECK ITEM.

Perform Idle Air Volume Learn-
ing.

ECM-72

< SYSTEM DESCRIPTION >

[MR20DD]

DIAGNOSIS SYSTEM (ECM)

*: Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.

DTC WORK SUPPORT MODE

Teat Item

SRT & P-DTC MODE

SRT STATUS Mode

For items whose SRT codes are set, “CMPLT” is displayed on the CONSULT screen; for items whose SRT-
codes are not set, “INCMP” is displayed.

SRT WORK SUPPORT Mode

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

POWER BALANCE

• Engine: After warming up, idle the

engine.

• A/C switch OFF
• Selector lever: N (CVT), Neutral (M/

• Cut off each injector signal one at a

time using CONSULT.

Engine runs rough or stops.
(Works for accidental fire.)

• Harness and connectors
• Compression
• Fuel injector
• Power transistor
• Spark plug
• Ignition coil

INT V/T ASSIGN AN-
GLE

Changes intake valve timing using
CONSULT.

If malfunctioning symptom dis-
appears, see CHECK ITEM.

• Harness and connectors
• Intake valve timing control so-

lenoid valve

EXT V/T ASSIGN
ANGLE

Changes exhaust valve timing using
CONSULT.

If malfunctioning symptom dis-
appears, see CHECK ITEM.

• Harness and connectors
• Exhaust valve timing control

solenoid valve

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

Test mode

Test item

Reference page

HO2S2

O2 (B1) P0138

ECM-212, "DTC Description"

O2 (B1) P0137

ECM-206, "DTC Description"

A/F SEN1

A/F (B1) P0133

ECM-225, "DTC Description"

A/F (B1) P0130

ECM-197, "DTC Description"

ECM

ECM-73

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

ECU DIAGNOSIS INFORMATION

ECM

Reference Value

INFOID:0000000010702849

VALUES ON THE DIAGNOSIS TOOL

NOTE:
• The following table includes information (items) inapplicable to this vehicle. For information (items) applica-

ble to this vehicle, refer to CONSULT display items.

• Numerical values in the following table are reference values.
• These values are input/output values that ECM receives/transmits and may differ from actual operations.

Example: The ignition timing shown by the timing light may differ from the ignition timing displayed on the
data monitor.
This occurs because the timing light shows a value calculated by ECM according to signals received from
the camshaft position sensor and other sensors related to ignition timing.

• For outlines of following items, refer to

ECM-65, "CONSULT Function"

Monitor Item

Condition

Values/Status

ENG SPEED

• Connect the tachometer.
• Run engine and compare CONSULT value with the tachometer in-

dication.

Almost the same speed as

the tachometer indication.

MAS A/F SE-B1

See

ECM-137, "Description"

B/FUEL SCHDL

See

ECM-137, "Description"

A/F ALPHA-B1

See

ECM-137, "Description"

COOLAN TEMP/S

Engine: After warming up

More than 70

A/F SEN1 (B1)

Engine: After warming up

Maintaining engine speed at
2,000 rpm

Fluctuates around 2.2 V

HO2S1 (B1)

• Engine: After warming up
• After keeping engine speed be-

tween 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute
under no load.

Revving engine from idle up to
3,000 rpm quickly

0 – 0.3 V

←→

Approx. 0.6 –

1.0 V

LEAN

←→

RICH

VHCL SPEED SE

Turn drive wheels and compare CONSULT value with the speedom-
eter indication.

Almost the same speed as

speedometer indication

BATTERY VOLT

Ignition switch: ON (Engine stopped)

11 – 14 V

ACCEL SEN 1

Ignition switch: ON (Engine
stopped)

Accelerator pedal: Fully re-
leased

0.6 – 0.9 V

Accelerator pedal: Fully de-
pressed

4.0 – 4.8 V

ACCEL SEN 2*

Ignition switch: ON (Engine
stopped)

Accelerator pedal: Fully re-
leased

0.3 – 4.7 V

Accelerator pedal: Fully de-
pressed

1.95 – 2.4 V

TP SEN 1-B1

• Ignition switch: ON (Engine

stopped)

• Selector lever: D (CVT), 1st (M/

Accelerator pedal: Fully re-
leased

More than 0.36 V

Accelerator pedal: Fully de-
pressed

Less than 4.75 V

TP SEN 2-B1*

• Ignition switch: ON (Engine

stopped)

• Selector lever: D (CVT), 1st (M/

Accelerator pedal: Fully re-
leased

More than 0.36 V

Accelerator pedal: Fully de-
pressed

Less than 4.75 V

START SIGNAL

Ignition switch: ON

→

START

→

OFF

→

OFF

ECM-74

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

CLSD THL POS

Ignition switch: ON (Engine
stopped)

Accelerator pedal: Fully re-
leased

Brake pedal: Slightly de-
pressed

OFF

AIR COND SIG

Engine: After warming up, idle the
engine

Air conditioner switch: OFF

OFF

Air conditioner switch: ON
(Compressor operates)

PW/ST SIGNAL

Engine: After warming up, idle the
engine

Steering wheel: Not being
turned

OFF

Steering wheel: Being turned

LOAD SIGNAL

Ignition switch: ON

Rear window defogger switch:
ON and/or Lighting switch: 2nd
position

Rear window defogger switch
and lighting switch: OFF

OFF

IGNITION SW

Ignition switch: ON

→

OFF

→

OFF

→

HEATER FAN SW

Engine: After warming up, idle the
engine

Blower fan switch: ON

Blower fan switch: OFF

OFF

BRAKE SW

Ignition switch: ON

Brake pedal: Fully released
OFF

OFF

Brake pedal: depressed

IGN TIMING

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

−

2 – 8

BTDC

2,000 rpm

18 – 38

BTDC

COMBUSTION

NOTE:
This item is displayed but are not applicable to this model.

—

CAL/LD VALUE

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

5 – 35 %

2,500 rpm

5 – 35 %

MASS AIRFLOW

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

1.0 – 5.0 g/s

2,500 rpm

2.0 – 10.0 g/s

PURG VOL C/V

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle
(Accelerator pedal: Not de-
pressed even slightly, after en-
gine starting)

1 %

2,000 rpm

1 – 90 %

INT/V TIM(B1)

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

−

5 – 5

When revving engine up to
2,000 rpm quickly

Approx. 0 – 20

EXH/V TIM B1

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

−

5 – 5

When revving engine up to
2,500 rpm quickly

Approx. 0 – 30

Monitor Item

Condition

Values/Status

ECM

ECM-75

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

INT/V SOL(B1)

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

0 %

When revving engine up to
2,000 rpm quickly

0 – 90 %

SWRL CONT S/V

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

4,000 rpm

OFF

VTC DTY EX B1

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

0 – 2 %

When revving engine up to
2,000 rpm quickly

Approx. 0 – 90 %

AIR COND RLY

Engine: After warming up, idle the
engine

A/C switch: OFF

OFF

A/C switch: ON
(Compressor operates)

FUEL PUMP RLY

• For 1 seconds after turning ignition switch ON
• Engine is running or cranking

Except above

OFF

THRTL RELAY

Ignition switch: ON

HO2S1 HTR (B1)

• Engine speed is less than 3,600 rpm after the following conditions

are met.

- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1

minute and at idle for 1 minute under no load

Engine speed: More than 3,600 rpm

OFF

I/P PULLY SPD

• Connect the tachometer.
• Start the engine and compare

CONSULT value with the ta-
chometer indication.

Vehicle speed: More than 20
km/h (12 MPH)

Almost the same speed as

the tachometer indication

VEHICLE SPEED

Turn drive wheels and compare CONSULT value with the speedom-
eter indication.

Almost the same speed as

the speedometer indication

IDL A/V LEARN

• Engine: After warming up
• A/C switch: OFF
• No load
• Throttle valve closed position

learning: Completed

Idle air volume learning has al-
ready been performed suc-
cessfully.

CMPLT

Idle air volume learning has not
been performed yet.

YET

TRVL AFTER MIL

Ignition switch: ON

0 – 65,535 km

ENG OIL TEMP

Engine: After warming up

More than 70

C (158

A/F S1 HTR (B1)

Engine: After warming up, idle the engine
(More than 140 seconds after starting engine)

4 – 100%

VHCL SPEED SE

Turn drive wheels and compare CONSULT value with the speedom-
eter indication.

Almost the same speed as

the speedmeter indication

SET VHCL SPD

Engine: After warming up

ASCD: Operating

The preset vehicle speed is

displayed.

MAIN SW

Ignition switch: ON

MAIN switch: Pressed

MAIN switch: Released

OFF

CANCEL SW

Ignition switch: ON

CANCEL switch: Pressed

CANCEL switch: Released

OFF

Monitor Item

Condition

Values/Status

ECM-76

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

RESUME/ACC SW

Ignition switch: ON

RESUME/ACCELERATE
switch: Pressed

RESUME/ACCELERATE
switch: Released

OFF

SET SW

Ignition switch: ON

SET/COAST switch: Pressed

SET/COAST switch: Released

OFF

BRAKE SW1
(Brake pedal position switch)

Ignition switch: ON

Brake pedal: Fully released

Brake pedal: Depressed

OFF

BRAKE SW2
(Stop lamp switch)

Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Depressed

VHCL SPD CUT

Ignition switch: ON

NON

LO SPEED CUT

Ignition switch: ON

NON

AT OD MONITOR

Ignition switch: ON

OFF

AT OD CANCEL

Ignition switch: ON

OFF

CRUISE LAMP

Ignition switch: ON

MAIN switch: Pressed at the
1st time

→

at the 2nd time

→

OFF

SET LAMP

• MAIN switch: ON
• When vehicle speed is between

40 km/h and 100 km/h

ASCD: Operating

ASCD: Not operating

OFF

A/F ADJ-B1

Engine: Idle

−

0.450 – 0.330

P/N POSI SW

Ignition switch: ON

Selector lever: P or N (CVT),
Neutral (M/T)

Selector lever: Except above
position

OFF

INT/A TEMP SE

Engine: After warming up

Indicates intake air tempera-

ture

AC PRESS SEN

• Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor oper-

ates)

1.0 – 4.0 V

FUEL PRES SEN

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

Approx. 2.74 MPa

2,000 rpm

Approx. 3.0 MPa

ATOM PRES SEN

Ignition switch: ON

3.15 - 4.60 V

FUEL INJ B1

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

Approx. 0.8 msec

2,000 rpm

Approx. 1.1 msec

H/P FUEL PUMP DEG

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

Approx. 255 – 275 deg

2,000 rpm

Approx. 255 – 275 deg

FUEL PRES SEN V

• Engine: After warming up
• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

Approx. 820 – 1,140 mV

When revving engine up to
4,000 rpm quickly

Approx. 820 – 2,900 mV

Monitor Item

Condition

Values/Status

ECM

ECM-77

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

*1: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ
from ECM terminals voltage signal.

*2: Indicates the intake manifold runner control valve.

*3: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to

PG-138, "FOR MAINTENANCE REQUIRED

BATTERY MODELS : Work Procedure"

*4: Varies with the atmospheric pressure changed by whether or elevation as this is an absolute pressure sensor.

TERMINAL LAYOUT

PHYSICAL VALUES

NOTE:
• ECM is located in the engine room left side near battery.
• Specification data are reference values and are measured between each terminal and ground.
• Pulse signal is measured by CONSULT.

EOP SENSOR

• Engine oil temperature: 80

• Selector lever: P or N (CVT),

Neutral (M/T)

• A/C switch: OFF
• No load

Idle

Approx. 1,450 mV

2,000 rpm

Approx. 2,850 mV

ECM TEMP 1

• Engine: At cooling
• Ignition switch: Right after ON

Indicates the ambient tem-

perature.

ECM TEMP 2

• Engine: At cooling
• Ignition switch: Right after ON

Indicates the ambient tem-

perature.

FUEL INJ TIM

• Engine oil temperature: 80

• Selector lever: P or N position
• A/C switch: OFF
• No load

Idle

Approx. 62 deg

2,000 rpm

Approx. 62 deg

FAN DUTY

• Engine: Running

0 - 100%

THRTL STK CNT B1

NOTE:
This item is displayed but are not applicable to this model.

—

A/F SEN1 (B1)

• Engine: After warming up

Maintaining engine speed at
2,000 rpm

Fluctuates around 2.2 V

A/F-S ATMSPHRC CRCT B1

Engine: After warming up, idle the engine

Varies depending on vehicle

environment.

A/F-S ATMSPHRC CRCT UP
B1

Engine: Running

Varies depending on the

number of updates.

A/F SEN1 DIAG2 (B1)

DTC P014C and P014D self-diagnosis incomplete.

INCMP

DTC P014C and P014D self-diagnosis is complete.

CMPLT

A/F SEN1 DIAG3 (B1)

The vehicle condition is not within the diagnosis range of DTC
P014C or P014D.

ABSNT

The vehicle condition is within the diagnosis range of DTC P014C or
P014D.

PRSNT

Monitor Item

Condition

Values/Status

JSBIA0505ZZ

ECM-78

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

−

Signal name

Input/

Output

(G)

(GR)

Fuel injector No. 1 (HI)
Fuel injector No. 2 (HI)
Fuel injector No. 3 (HI)
Fuel injector No. 4 (HI)

Output

[Engine is running]
• Engine: after warming up
• Idle speed

NOTE:
The pulse cycle changes depend-
ing on rpm at idle.

BATTERY VOLTAGE

(11 – 14 V)

(L)

(B)

[Engine is running]
• Engine: after warming up
• Engine speed:2,000 rpm

BATTERY VOLTAGE

(11 – 14 V)

(W)

(R)

(GR)

Fuel injector No. 1 (LO)
Fuel injector No. 2 (LO)
Fuel injector No. 3 (LO)
Fuel injector No. 4 (LO)

Output

[Engine is running]
• Engine: after warming up
• Idle speed

NOTE:
The pulse cycle changes depend-
ing on rpm at idle.

BATTERY VOLTAGE

(11 – 14 V)

(P)

(W)

[Engine is running]
• Engine: after warming up
• Engine speed:2,000 rpm

BATTERY VOLTAGE

(11 – 14 V)

(B)

—

ECM ground

—

(—)

—

Shield

—

(W)

128

(B)

Reverse/Neutral position sig-
nal (M/T)
Park/Neutral position signal
(CVT)

Input

[Ignition switch: ON]
• Selector lever: P or N (CVT), Neu-

tral (M/T)

BATTERY VOLTAGE

(11 - 14 V)

[Ignition switch: ON]
• Selector lever: Except above posi-

tion

0 V

(R)

—

Sensor ground (Camshaft
position sensor)

—

JPBIA4718ZZ

JPBIA4719ZZ

JPBIA4720ZZ

JPBIA4721ZZ

ECM

ECM-79

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

(W)

(R)

Camshaft position sensor

Input

[Engine is running]
• Engine: after warming up
• Idle speed

NOTE:
The pulse cycle changes depend-
ing on rpm at idle.

1.0 – 2.0

[Engine is running]
• Engine: after warming up
• Engine speed: 2,000 rpm

1.0 – 2.0

(GR)

—

Sensor ground (Mass air flow
sensor, intake air tempera-
ture sensor)

—

(L)

(BR)

Sensor power supply
(Crankshaft position sensor)

—

[Ignition switch: ON]

5 V

(Y)

(R)

Sensor power supply
(Fuel rail pressure sensor, re-
frigerant pressure sensor,
engine oil pressure sensor)

—

[Ignition switch: ON]

5 V

(Y)

(B)

Sensor power supply
(Exhaust valve timing control
position sensor)

—

[Ignition switch: ON]

5 V

(L)

—

Sensor ground (Engine cool-
ant temperature sensor, en-
gine oil temperature sensor)

—

(BR)

(GR)

Mass air flow sensor

Input

[Ignition switch: ON]
• Engine stopped

0.4 V

[Engine is running]
• Engine: after warming up
• Idle speed

0.7 – 1.2 V

[Engine is running]
• Engine: after warming up
• Revving engine from idle to 4,000

rpm
NOTE:
The voltage rises smoothly in re-
sponse to revving up the engine.

0.7 – 1.2 V

→

2.4 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

−

Signal name

Input/

Output

JPBIA4726ZZ

JPBIA4727ZZ

ECM-80

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

(GR)

(R)

Engine oil pressure sensor

Input

[Engine is running]
• Engine: after warming up
• Idle speed

1.3 V

[Engine is running]
• Engine speed: 2,000 rpm

2.7 V

(G)

(L)

Engine coolant temperature
sensor

Input

[Engine is running]

0 – 4.8 V

Output voltage varies with engine

coolant temperature.

(P)

(L)

Engine oil temperature sen-
sor

Input

[Engine is running]

0 – 4.8 V

Output voltage varies with engine

oil temperature.

(G)

(R)

Fuel rail pressure sensor

Input

[Engine is running]
• Engine: after warming up
• Idle speed

0.82 – 1.14 V

[Engine is running]
• Engine: after warming up
• Revving engine from idle to 4,000

rpm

0.82 – 2.9 V

(P)

(R)

Refrigerant pressure sensor

Input

[Engine is running]
• Engine: after warming up
• Idle speed
• A/C switch: ON (Compressor op-

erates)

1.0 – 4.0 V

(V)

(GR)

Intake air temperature sen-
sor

Input

[Engine is running]

0 – 4.8 V

Output voltage varies with intake

air temperature.

(—)

—

Sensor ground (Knock sen-
sor)

—

(R)

—

Sensor ground (Fuel rail
pressure sensor, refrigerant
pressure sensor, engine oil
pressure sensor)

—

(W)

(—)

Knock sensor

Input

[Engine is running]
• Idle speed

2.5 V

(B)

—

Sensor ground (Exhaust
valve timing control position
sensor)

—

(B)

(R)

Sensor power supply (Cam-
shaft position sensor)

—

[Ignition switch: ON]

5 V

(BR)

—

Sensor ground (Crankshaft
position sensor)

—

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

−

Signal name

Input/

Output

JPBIA3359ZZ

JPBIA3360ZZ

ECM

ECM-81

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

(G)

128

(B)

LIN communication line

Input/

Output

[Ignition switch: ON]

12 V

(LG)

(B)

Exhaust valve timing control
position sensor

Input

[Engine is running]
• Engine: after warming up
• Idle speed

NOTE:
The pulse cycle changes depend-
ing on rpm at idle.

1.0 – 2.0

[Engine is running]
• Engine: after warming up
• Engine speed: 2,000 rpm

1.0 – 2.0

(GR)

(BR)

Crankshaft position sensor

Input

[Engine is running]
• Engine: after warming up
• Idle speed

NOTE:
The pulse cycle changes depend-
ing on rpm at idle.

4.0 V

[Engine is running]
• Engine: after warming up
• Engine speed: 2,000 rpm

4.0 V

(Y)

(GR)

Fuel injector driver power
supply 1

Input

[Engine is running]
• Engine: after warming up
• Idle speed

BATTERY VOLTAGE

(11 – 14 V)

(V)

(B)

High pressure fuel pump re-
lay

Input

[Engine is running]
• Engine: after warming up
• Idle speed

BATTERY VOLTAGE

(11 – 14 V)

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

−

Signal name

Input/

Output

JPBIA4273ZZ

JPBIA4730ZZ

JPBIA4731ZZ

JPBIA4728ZZ

JPBIA4729ZZ

Qashqai J11. Engine control system (MR20DD) - part 5